I created this structure to hold the bottles. in my case it is tailor-made to fit into my living room, but it is also perfect to use stand alone. My printer is an Elegoo Neptune 4 and, after doing some tests, I managed to size the holes and joints so that the structure is quite rigid. No screws, glues or anything else are needed. it is modular, so you can add or remove columns (groups of 4) and rows (individually). Note: the model I uploaded does not bear my signature like the one in the photo ;) Enjoy it.